Hi,
On Wed, 24 Feb 2021 at 09:57, Richard Biener via Gcc-patches
<gcc-patches@gcc.gnu.org> wrote:
>
> On Tue, Feb 23, 2021 at 8:53 PM Martin Sebor via Gcc-patches
> <gcc-patches@gcc.gnu.org> wrote:
> >
> > Adding attribute access to declarations of functions that take
> > VLA arguments relies on the front end adding attribute "arg spec"
> > to each VLA parameter. Like the VLA bounds in attribute access,
> > the same VLA bounds in attribute "arg spec" can cause trouble
> > during LTO streaming which expects front end trees to have been
> > either gimplified or removed. For some reason, with arg spec
> > the LTO abort happens only with -fpic/-shared and so it escaped
> > testing in the prior fixes.
> >
> > The attached patch clears the bounds from attribute "arg spec."
>
> OK.
I committed the patch below as obvious, to avoid failures on targets
where -shared is not supported.
This happens on Arm where the multilibs are not compiled with -fpic
and link fails because
some relocations are generated which are incompatible with -shared.
commit 01c2ce169a05c8e59c4182796876f7e0754e4b5c
Author: Christophe Lyon <christophe.l...@linaro.org>
Date: Thu Feb 25 15:55:28 2021 +0000
PR middle-end/97172 - ICE: tree code 'ssa_name' is not supported
in LTO streams
Skip test when -shared is not supported.
2021-02-25 Christophe Lyon <christophe.l...@linaro.org>
gcc/testsuite/
PR middle-end/97172
* gcc.dg/pr97172-2.c: Add dg-require-effective-target shared.
diff --git a/gcc/testsuite/gcc.dg/pr97172-2.c b/gcc/testsuite/gcc.dg/pr97172-2.c
index 6f355bb..99cc6c2 100644
--- a/gcc/testsuite/gcc.dg/pr97172-2.c
+++ b/gcc/testsuite/gcc.dg/pr97172-2.c
@@ -3,6 +3,7 @@
{ dg-do link }
{ dg-options "-Wall -flto -fpic -shared" }
{ dg-require-effective-target fpic }
+ { dg-require-effective-target shared }
{ dg-require-effective-target lto } */
#include "pr97172.c"
Christophe
>
> Richard.
>
> > Martin
